146/RJ and Concorde AI models for VATSIM

Hi folks,

A slightly niche question possibly but does anyone know where I can get AI models for the RJ and 146 to be used as VATSIM model matches, as there are quite a few flying around on VATSIM now for obvious reasons 😁 Also there is the occasional Concorde flying around and I just get a default CRJ instead. I have FSLTL and FS Traffic but they don't have these models (perfectly understandably - these aircraft are not in service any more).

Cheers all